Hi,

Does anyone have good experience of braking effect with the Plett Evo 30-10 / Jeti Spin 99 ESC. I have these in my C-ARF Integral and when it comes to the figure 9, 2 half rolls oppsite, manoeuvre in PO9, the model just accelerates incredibly on the down line making it look really rushed. I've tried APC 20 x 15 and 21 x 14 props but can't seem to get what I want from this setup in this one manoeuvre. Any ideas?

Keith

Hi Keith seems no brake activation and not related with the prop used.

Please review this interesting thread: "Plettenburg EVO30-10 Motor measurements", maybe could help you.
http://www.gbrcaa.org/smf/index.php?topic=1055.msg6152

I use Hacker (Not Pletty) and the Jeti Spin99, and my parameters are:
Dead time: 0.5s
Initial brake: 20%
Final brake 40%
Brake speed: 1.0s

I used the Jeti box for measuring the width pulse and set the IRP (Initial regulation point) the value of the motor trottle stick stop position.
For my radio is ~0.918ms.


I feel power brake for instance, descending in figure 9 when is "On" using 22x12 and 21x13, I have not tried the 21x14 yet.

A good clue is a different aerodynamic sound when is "ON" during the descend in this manouver.

Regards

Federico

Hello Keith,
I have the poor man's Pletties, (Axi 5330 F3A/Dualsky 11T/12T), but do use the jeti ESC.
FWIW, with a 20.5x14 APC, I set my lowest throttle position,as one throttle curve,with the following brake settings:
Manual Setting.
Dead time 0.2 secs.
Initial brake 30%
End brake 40%
Brake speed0.5 sec.
This lowest throttle position, is set on the Tx such that a/ it arms the ESC,and b/it is low enough to ensure 0rpm.
Then,via a switch, I set a second throttle curve,identical to the first, except that the low point is just a bit higher, so that switching it in sets the lowest possible idle(so low that you have to "start" the prop initially by moving the throttle stick slightly)
Then I fly mostly on this second curvebut, when I can be bothered, I can switch in the braked throttle curve as requiredlike you I find it handy for that same P09 manouevre...
The beauty of the jeti programmer, and its jeti box, is that you can play with the %age brake settings at the field, to get the degree of braking that might seem to best suit your individual taste...

Thanks for your input guys; I'm going to try it on the bench tonight to see if I can resolve this.

Keith

The Jeti brake as I understand then only comes on when the stick is back to idle and the prop otherwise quits spinning on the ground.

Is there an ESC that would keep the motor from overspeeding in a downline while maintaining an idle setting? I think this would technically be a governed speed control, but I know my Jeti Spin 99 when doing a humpty from the top really takes off when you push the downline from the top if you leave it set at an few hundred rpm.